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Method for enabling digital ground multimedia broadcasting system to be bi-directional

A terrestrial broadcasting, two-way technology, applied in image communication, selective content distribution, electrical components, etc., can solve problems such as inability to provide effectively, and achieve low-cost effects

Active Publication Date: 2013-05-15
ZHENGZHOU SEANET TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to provide a two-way method for digital terrestrial broadcasting system in order to overcome the shortcomings that the existing terrestrial broadcasting system and wireless broadband communication system cannot effectively provide interactive multimedia broadcasting and broadband communication fusion services

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  • Method for enabling digital ground multimedia broadcasting system to be bi-directional
  • Method for enabling digital ground multimedia broadcasting system to be bi-directional
  • Method for enabling digital ground multimedia broadcasting system to be bi-directional

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Embodiment Construction

[0035] The content of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0036] The invention integrates wireless broadband communication technology with terrestrial TV / multimedia broadcasting technology, not only takes advantage of the rich spectrum resources of the broadcasting system and the high efficiency of downlink distribution of multimedia data content, but also uses the advantages of mature broadband communication technology to support two-way transmission, providing a broadcasting system Provide a flexible and reliable return path to support broadband wireless access of asymmetric services at low cost, and enable existing broadcast terminals in a two-way system to use the original broadcast services without upgrading, and support simple and low-cost upgrades Convergence of interactive broadcasting and wireless broadband services.

[0037] For the above purpose, the present invention designs a two-way system ar...

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Abstract

The invention provides a method and a system for enabling a digital ground multimedia broadcasting system to be bi-directional. The method combines a digital ground broadcasting downlink with a general packet radio service (GPRS) compatible uplink. In a channel physical layer, the downlink continues to use a digital ground broadcast transmission mode to increase a wireless uplink, and the uplink utilizes one or a plurality of 200KHz bandwidth frequency channels of an idle ground wireless transmission frequency range and uses a GPRS uplink transmission mode. The uplink and the downlink belong to asymmetric frequency division duplex modes. Above the physical layer, media access control of broadcast multiplex and bi-directional bandwidth carries out integration design, and broadcasting services, broadband services and signaling data of the downlink carry out time division multiplexing to a downlink transmission channel. Through utilization of the 200KHz frequency channel, the method upgrades a one-way digital broadcasting system to an interactive broadcast and broadband access integration system, supports asymmetric bi-directional services of a broadband downlink and a medium-small bandwidth uplink, and is suitable for providing interactive broadcast and wireless broadband integration services to suburbs, villages and middle-sized and small cities in low cost.

Description

Technical field [0001] The present invention relates to the technical fields of terrestrial digital broadcasting (television or multimedia broadcasting) and terrestrial wireless broadband, and is particularly aimed at the convergence technology of terrestrial TV / multimedia broadcasting network bidirectionalization and wireless broadband access. That is, the present invention provides a bidirectional digital terrestrial multimedia broadcasting system Method. Background technique [0002] Digital multimedia / TV broadcasting is mainly realized through three transmission methods: satellite, wired cable and terrestrial wireless. With its unique reception convenience and mobile reception capabilities, terrestrial wireless broadcasting can meet people's needs for information anytime and anywhere in the modern information society. [0003] The digital terrestrial broadcasting system of the present invention includes fixed receiving and portable mobile receiving terrestrial TV broadcasting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/236H04N21/238H04N21/239H04N21/24H04N21/643
Inventor 曾学文倪宏王劲林刘马飞
Owner ZHENGZHOU SEANET TECH CO LTD
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